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Publication numberUS517733 A
Publication typeGrant
Publication dateApr 3, 1894
Publication numberUS 517733 A, US 517733A, US-A-517733, US517733 A, US517733A
InventorsDavid S. Cole
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 517733 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)

\ D.s.COLE. ,y


Patented Apr. 3, 1894;




SPECIFICATION forming part of Letters Patent No. 517,733, dated Apin 3,1894.

Application iled March 16, 1893.

, To a/ZZ whom it may concern.-

c provements in Multiplying lphotographic apparatus,

enable others skilled in the art to which it api pertains to make and use the same. K

My present invention has 'reference to an Improved multiplying attachmentfor use with'V the object being to provide a simple, cheaply constructed instantly-applied and readily-operated device which can be attached to any ordinary photographic apparatus whenever it is desired to produce numerous negatives on thesame plate for the purpose of simultaneously printing several photographs 'or likenesses, conveniently grouped together in any manner, the Invention therefore being particularly useful and desirable for taking family groups on the same card so that all the lkenesseswill be in good shape and clearly outlined, no matter what may be the age, complexion, form or other characteristic of the different subjects, and the invention therefore consists essentially in the construction, arrangement and combination of the several `parts, substantially as will be hereinafter described and claimed.

In the annexed drawingsillustrating my in^- vention: Figure 1 is a front elevation of a. photographicapparatusshowing myimproved multiplying attachment arranged operatively therein. Fig. 2 is a detail front elevation of the attachment. Fig. 3 is a modified form of thel removable disk. Fig. 4 is a cross section Fig. 5 is a sectional on the line .fr @tof-Fig 2. view of the line of Fig. l.

Similar letters of reference designate corresponding parts throughout the diierent iig-` ures.

A designates any ordinary photographic apparatus having any common, desired, or usual structure and provided withv thev customary parts including the sliding gage ordinarily employed for the purpose of sliding the sensitive plate across the field of vision in order to` permit severalimpressionstobetaken thereon.

and is adapted ser-iti Nt. 466,338. (No man.)

B denotes a fiat plate, constituting a part of my improved device, which plate is intended to be placed firmly in a vertical position ina rectangular frame I in therear end of the camera and in front of the ground glass, as shown in Fig. 1. Ther plate B Will thus be located in a stationary and immovable position. When the'camera is in usethe sensitive plate will be locatcdadj acent to the plate B in the usual manner. Plate B is provided with a large opening, preferably of a circular form, as B. This opening B', is intended vto be covered-by means of a suitable rotary disk which may have a variety of dierent apertures. C and F denote examples of rotary disks which may be employed in connection with the plate BL Plate Bis providedwith projections E E secured thereto near the periphery of the circular opening B and serving to hold the rotary disk yin position after it has been seated upon the plate B, covering the opening B' as shown in Fig. 2,there being in addition to the rigid projections E apivoted or movable projection E which locks the rotary disk firmly after it has been inserted in place and which permits said disk to be withdrawn whenever it is ydesired to for the purpose of substituting another or for changing the use of the device in anydesired manner.

'A' designates the ground glass ofthe camera, A, h the slideways, hthe slide gage, B'

the multiplier receiver or holder, J thesensitive plate holder and K the sensitive plate.

The rotary disk C is provided with a central aperture c of circular form and between the central aperture c and the periphery of the disk vC is another similar aperture c. cover or shutter D is meansof the pivot d" on which it swings, it being adapted to close one orthe other of the openings c c as may be desired.

F designates another 'rotary diskhaving no central opening, but having at one side of its Center a circular aperture f and at the other side a triangularly-shaped aperture f. Atritake it outl pivoted to the disk C by v angular-shaped valve or cover G is pivoted u by means of the pivot g at the center of disk F. Said cover G swings around upon its pivot to close one or openings f f as' may be desired.

the other of the with It will be understood that the disks C and F are interchangeable with each other," one being used at one time and the other at another. I am by. no means restricted-to the use o f these two disks, but can employ any kind of rotary disk. The disks maybe arranged for anynumber of pictures in proportion to the size thereof, As has already been explained, one can easily be removed from thev plate B and another inserted by simply adJ usting the movable button. I vreserve the liberty of constructing Athese disks therefor anydesired number olil apertures cut theifein in any desired form andarranged in positions are secured thereby producing a vto the opening c in any desired grouping l u The operation and use of my present improved device will I think be clearly understood from the foregoing description of the construction and application of the same toa camera. The attachment' is as already explained placed in a common camera in front ofthe ground glass'. When the disk C is used the image will be thrown upon the `plate through the central opening or through the other opening as the. case may be and owing proper adjustment of the4 shutter D. When thedisk C has been moved with its p one position to produce a photograph, the disk can then be rotated` to bring to bear on another part ofthe plate, the image. This may be repeated until all of the and the plate'is full, vneat grouping of likenesses, upon the same plate. Obviously the camera will be adjusted to suit the opening lowed with the each :presence of two witnesses.

in the disk. The same procedure will be foldisk F. It can be rotated so as to bring the aperture f or f', as the case may be, into different positions successively,

position enabling the operator to produce the'likeness on the plate; and the entire operation results in the production of the group of photographs ingeniously and attract ively displayed.

Having thus describedmy invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a multiplying attachment for photographic cameras, the combination of the plate Bhaving the circular opening` B', fixed buttons'E E and movable button E', the rotary disk C having two apertures and a shutter or cover D pivoted to the 4disk C so as to cover either of said apertures, substantially as described.

2. In a multiplying attachment'tor photographic cameras, the combinationof the plate Bfhaving the circular opening B and ti-xed buttons E E and movable button E', the I"ro- Vtary disk C, having a central aperture c and a sideaperture c', and a shutter or cover D pivoted to the disk C so as tocover either of said apertures, all arranged substantially in the manner and for the purpose specified.

vIn testimony whereof I ailix my signatu re in DAVID S. COLE. Witnesses: 4

, A. S. FoLGnn,


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4478501 *Apr 4, 1983Oct 23, 1984Klancnik John HSet of dark slides for use with a zone exposure system
Cooperative ClassificationG03B15/08